Weighing-appaeatt



Nov. 27,1923. 1,475,547

C. DE GRAAF, JR., ET AL WBIGH I HG APPARATUS 30. 1921 3 Shoots-Shoat 1 ammbw 9: 6M 42 QMBW Nov. 27 1923. 1,475,547

C. DE GRAAF. JR. ET AL WEIGHING APPARAIlUS Filed March 30. 1921 3 Sheets-Sheet 2 I l l; I

Nov. 27,1923. 1,475,547

\ C. DE GRAAF.'JR.. ET AL WEIGHING APPARATUS Filed March 30. 1921 3 Sheets-Sheet 3 mm diam a, Mama-3 Patented Nov. 27, 1923.

U N I TLE D" STAT E'S PA' TEN T' OF F ICE;

CORNELIS m: GBAAIE, 3B,, AND EDUARDVBURMAN, OF ROTTERDA.M,.NETHEB.LANDS, SIGNORS T -MAATSCHAPPLT. TOT.VEBVAARDIGING VAN SNIJ'MACHDIESZVDLGENS.\

VAN BERKELS PATENT EN VAN .ANDEBEI WEBKTIJIGEN,. OE BOTTEKDAM,

NETHERLANDS, A. LIMITED LIABILITY:

COMPANY OF NETHERIZALNDS.

WEIGHING-- APPARATUS.

Application filed 1151101130,

To all'ivboonit-ma l concern:

Be itlmownathat We, CORNELIS m: GRAAF;

J12, and Elbows-Bumme both citizensof the Kingdom of the Netherlands; residing at Rotterdam; in the Province" of South Holland, Kingdom of th'e-Fetllerlands;haveinvented certain' new andnseful Improvements in \Veighing Apparatns of which the following isa specification.

T he" invention relates to weighing apparutus and has for its fiistobject an=arrzmge+ mcnt; wherebywvith one and thesame up paratus wares may be freely and easily weighed by two shop-assistants simnltafi neously; withoutthe working of 'one' scale 1 being influenced by that of the other.

It has already been proposed '(see-'amongst others the British spec. WET- A. D: 1900) to secure to the stands-rd or"base-of-'"a.--lerg scalean auxiliary smaller *scale adaptedWcii weighsmaller-quantities?. This arran emenb is-however not such that the two' sca es can beused-simultaneously bytwo difirent A'nothePobject-"ofitlie present= invention -is--' to rovide efficient means for' increasing the weighing capacity of-the ajiparatusu;

According to I our" present invention the first mentioned object is attained by scour ing to the central npright'of'z'v weighin' ap parntns two sing]e-or doubledivided int icat ing scales,- each lia-v-ing a pointermoving thereover; said pointers heing connected re spectively to the beains'of'two load supports arranged at opposite sides" of-"the upright and adaptedto work independentlyof each other:

According to :mother featu1e-of*our;tin-'- ventionsaid arch-shaped indicating scales: are preferably arranged onehelow the other," the'concave sides-of' 'thez scales pointinginwardly-i The second object of the presentinven+ tion isobtained by providingtheweighing'f a pparatns with a loose counterweight; sus pended by means of trunnions from recesses" formed in a double crank, adepted' to'berotated from without, said I crank; when 1'0 tated leaving said counterweight in' suitable recessesof a forked member, seoured' tohthe heamu According to theinventiomin-rotatv ing the shaft of the double crank :1 quadrant: may he; moved along -the inneii 'fzvceof a 1921. Serial 110.45%021.

dividedindicating scale wherebyother!mun beris= appear behind the apertures of: said" sea 6:

\vh'enltheish'aft of the donble'sorank isrotated'. in 0rd er'toc bring; the counterweight! to' 1 the beam;- 2- second cranlr plasceds-belowthe other-endmf said beam; may be.carried= along inl such a way thatxthe beam -is.-. brought-into thei zeroepositioni and .(or)? isza kept-'-th erein,-". until the=co1mterweighti-restsa= with iits -trnnnions in'ithe' rec'essesof: the: forked member secu'r'edi toz-the abeazmp where" 05 upon;: when the rotation =ofiithe saide shift andz :therefore oi 'l thy-second .crank sis comtiziued the beamzbecmnes -again free In order that: our invention-may be? more: readil sunderstood;,itaw'ill bemhereinafitfir 7 descrihed with references toi ithe appending: drawingniiiwvhiolfg-i i i 1 1 Figzil shows aszfronhelevatidn iactiallyaina' section of a: :douhlmweighihgzappaxdttlsiac:- cordin do? the inventiongpartwfrth casingzi'fli being rokenreviagmv 7 Fig. 2153:: an .verrtiwli':section1.om tHBf' IihBFE A=-BiniFignreaI.. Y r 1.

The rimprowedh wei hin appaa'atusz: lias twoi load-:1 suppolitsfi I a-ndrsfie respectively 5 restingion :beaxmsv hand QGJbImQHFHSI ofisupeiports 2 and-'25; sdidbeamisxbeinQmklaPtedto osoillate=about two knife4edges4mnd 275% The; imier end. of.- -theubeami3- acts =upoma: '5 thin steel wire 9,-irunnin miniaiperiphericaligrooves of" an eccentrie iseil0n-then hitter being. secured:- to the shaft of .a.-'. double pointern 16- with counter-wee hti 1L Thenpointer" 16 inoves='overi *divi" ed in'dica-tings scales? 17; i

Therinnen end of the beam r26 act'smpem n- I thin steel wire 31, runningiiov'en eccentrio disc 32-, secured :tmthensliwffiioir: second-.95

double :poin ten with .counterweightirsaidesecw ondpointer 37', movingioven-indi'cati-ng scales= 38-,warrangedzbelow the scale 171; Theway irr-- which the two pointers aireiarranged ewith respeetto the-*scaleswand to eaeh'othergfis 10 shown in; Fig; 2: "i

B? locatingthe two load: scales atloppositesides of the central nprightrthennpper part-'- of which; carriesntlie two indicating scales? andcoeectingipointers; on simple Weighing! apparatnsisobtainedwhielii muy'bessimnl;

of the weighing apparatus.

taneously used by two persons without interference" i In Fig. 1 the right-hand scale 24 is provided with means or increasing the capacity As already stated above, said scale 24 rests upon a metal support 25 carriedby the beam 26, the latter being supported on a pivot 27, secured to the base 5. y

The pivots 27 and 28 of these parts consist of knives and cushions. To the inner end of the long arm of the beam 26 a centre 29 is secured, resting in a centre holder 30, attached to the lower end of the thin steel wire 31, the upper end of which is secured to the eccentric disc 32- fixed on the shaft of the counterweight or pendular 33, a groove 34 being provided in the circumference of said disc, in which said wire is-guided. The

knife 35, resting in cushions 36, secured to the top of the upright 14.. As already said the pendular 33 carries a double pointer 37, moving over divided indicating scales 38.

The support 25 of the-load support 24 is provided with a 'downwardly extending arm 39, which by means of a coupling rod 40 is movably connected to the base 5. This arrangement serves to effect the parallel motion of the scale. 7

On one end of a shaft 45 extending transversely through the upright 14, v adouble crank 46 issecured,having-recesses 47 made therein, in which by means of the trunnions a mass 48 may be suspendedin .case a load has to be weighed, falling within-the small weighing limits. Then a .heavierloadlhas to be weighed, the shaft-45by -mean's of a -handle 49 firmly seci1redto:the.other end of said shaft is rotated .until-tlie mass;48 rests in the forked member 50, the matter'being fixed to the longarm iof'thebeam 126.2%!

\ with recesses -.51' preventing the mass 48 from changing its positionduring the up and down movement-of the scale.

When the mass 48 rests in" the-forked member 50, the crank 46 is rotated by means ='--'of the handle 49 to sucli an extent, that the mass 48 comes'free therefrom. In order to put the mass 48 out of action the shaft 45 is rotated in opposite direction, whereby the longend 52: of the crank 46 takes up the i a mass, so that-thelatter-rests againin the recesses 47 of the-crank 46. In'the front face of the case 53 two openings 54 are formed,

keeping the'handle 49 in its proper position by means. of a: blade spring 55.-

The crank 46 is provided with a projection 56 to which a thin steel wire 57 is secured connected to one arm 58 of a bell crank lever 59, pivotally secured to the casing 60. The other arm 61 of the bell crank lever'59 carries a quadrant 62,'which when the mass 48 is placed in the forked member disc 32 and pendular 33 are supported by a 50 serves to readably change the number of kilograms indicated on one of the scales 38.

By means of a spring 63, secured to the casing 60, the quadrant 62, when the mass 48 is put in, is displaced, whereby before the openings 64, provided in the scale 38 larger numeralsappear. lVhen the mass 48 is again put out of action, the steel wire 57 by means of the bell crank lever 59 returns the quadrant 62 to its former position.

In order to insure a smooth operation of transferring the weight 48 from the crank 46 to the beam 26, a crank 65 is placed on the shaft 45, said crank being pivotally connected by means of a rod 66 to a bell crank lever 67, having a fixed pivot 68 in the base 5. lVhen the handle 49 is actuated one arm 69 of said bell crank lever 67 first presses against the short end of the beam, so that it is lifted (see the dotted lines in Fig. 3) and the long end of the beam 26 is moved downwards, whereupon the mass 48 is put in.. When the mass 48 is put in, the rotation of the handle is continued, till the crank 46 is free from the mass 48. In this case the arm 69 of the bellcrank lever 67 is also free from-the beam 26 so that the latter can oscillate freely.

What-weclaim is:

1. Weighing apparatus of the type described, comprising. two load supports, a

plurality of indicating scales for ,eachload scale facing in different directionsya pointer for each indicating scale and translating' therewith from different directions.

W i h appa t s 0? it er yi d scribed, comprising .an lupright, two load a supportsFon opposite sides, of the post, two -The forked .me'mber 50"isalsoprovided 7 scale co-operating with the other load scale,

apointer for each indicating scale and translating mechanism between each, load scale and the respective pointers affording independent operation of the two scales and reading of the indicating scales co-operating therewith from difi'erent directions.

Claim according to claim 1 in which the indicating scales co-operating with one load scale present their concave edges upwardly and the indicating scales co-operating with the other'load scale present their concave edges downwardly -the pointers being pivotally supported at the center of curvature of the respective scales.

4. Claim according to claim 3 in which the scales facing in the same direction are disposed in approximately the same vertical plane.

5. In weighing apparatus, the combination with a load scale and its beam, of a counterweight, means for transferring the counterweight from a position of inactivity upon the beam and vice versa and mechanism connected with the transferring means for acting upon the beam to determine its position during the transfer.

6. Apparatus according to claim 5, in which the said mechanism is constructed and arranged to bring the beam into a predetermined position before the transfer is effected and to maintain it in such position until the transfer is effected.

T. In weighing apparatus, the combination with a load scale and its beam, of a counterweight, a carrier for the counterweight pivotally mounted adjacent the end of the beam for movement in the plane of movement of the beam, the carrier being constructed to normally support the counterweight out of contact with the beam and to deposit the counterweight upon the beam when moved about its pivot in one direction and mechanism connected with the carrier for bearing upon the beam to bring it into the proper position during the transfer to or from the carrier, said mechanism being constructed and arranged to leave the beam free to move when the Weight is either in its normal position on the carrier or in operative position on the beam.

In testimony whereof, We affix our signatures.

CORNELIS DE GRAAF, J 1:. EDUARD BURMAN. 

